Nitrides disulfur dinitride

Nitrides — Metal and nonmetal nitrides Lead nitride silver nitride disulfur dinitride pentasulfur hexanitride... 

Cobalt(III) nitride, 4214 Copper(I) nitride, 4289 Diseleniumdisulfur tetranitride, 4769 Disulfur dinitride, 4754 Gold(I) nitride-ammonia, 0117 Gold(III) nitride trihydrate, 0118... 

Solid-state (topochemical) polymerization of cyclic disulfur dinitride to poly(sulfur nitride) (or polythiazyl), -fSN, occurs on standing at ambient temperature or higher [Banister and Gorrell, 1998 Labes et al., 1979 Ray, 1978]. Disulfur dinitride is obtained by sublimation of tetrasulfur tetranitride. Polythiazyl is a potentially useful material, since it behaves like a metal. It has an electrical conductivity at room temperature about the same order of magnitude as a metal like mercury and is a superconductor at 0.3°C. Polythiazyl also has high light reflectivity and good thermal conductivity. However, it is insoluble and infusible, which prevents its practical utilization. 

Cobalt(III) nitride, 4208 Copper nitride, 4283 Diseleniumdisulfur tetranitride, 4763 Disulfur dinitride, 4749 Gold nitride—ammonia, 0117... 

The following procedures give the synthesis of tetrasulfur tetranitride, disulfur dinitride, polymeric sulfur nitride, and tetrasulfur dinitride. 

For the transformation, disulfur dinitride is allowed to stand in a vacuum desiccator for ca. 30 days, after which time all the disulfur dinitride has polymerized to polymeric sulfur nitride. The progress of the reaction may easily be told by the disappearance of the characteristic smell of disulfur dinitride. The product is a dark substance with a metallic luster. 

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